Didn't belfort say he wouldn't be able to get licensed in time rather than prepare? (aka cycle off)

i'm having trouble understanding this. i thought that trt users were able to boost their levels to the legal limit, but no further. obviously, some cheeky bastards will abuse during camp, walking around like they are carrying rolls of carpet under each arm, but i thought they had to get within the limit every test.

like pezao and nate marquhuart, they went over the limit and got busted. i'm really confused.